<template>
  <view v-if="show" class="uni-noticebar" :style="'background-color:'+backgroundColor+';'" @click="onClick">
    <!-- 		<uni-icons v-if="showIcon === true || showIcon === 'true'" class="uni-noticebar-icon" type="sound"
          :color="color" size="22" /> -->
    <view ref="textBox" class="uni-noticebar__content-wrapper"
          :class="{'uni-noticebar__content-wrapper--scrollable':scrollable, 'uni-noticebar__content-wrapper--single':!scrollable && (single || moreText)}">
      <view :id="elIdBox" class="uni-noticebar__content"
            :class="{'uni-noticebar__content--scrollable':scrollable, 'uni-noticebar__content--single':!scrollable && (single || moreText)}">
        <text :id="elId" ref="animationEle" class="uni-noticebar__content-text"
              :class="{'uni-noticebar__content-text--scrollable':scrollable,'uni-noticebar__content-text--single':!scrollable && (single || showGetMore)}"
              :style="{color:color, width:wrapWidth+'px', 'animationDuration': animationDuration, '-webkit-animationDuration': animationDuration ,animationPlayState: webviewHide?'paused':animationPlayState,'-webkit-animationPlayState':webviewHide?'paused':animationPlayState, animationDelay: animationDelay, '-webkit-animationDelay':animationDelay}">
          {{ text }}
        </text>
      </view>
    </view>
    <view v-if="showGetMore === true || showGetMore === 'true'" class="uni-noticebar__more uni-cursor-point"
          @click="clickMore">
      <text v-if="moreText.length > 0" :style="{ color: moreColor }" class="uni-noticebar__more-text">{{
          moreText
        }}
      </text>
      <!-- <uni-icons v-else type="right" :color="moreColor" size="16" /> -->
    </view>
    <view class="uni-noticebar-close uni-cursor-point"
          v-if="(showClose === true || showClose === 'true') && (showGetMore === false || showGetMore === 'false')">
      <!-- 			<uni-icons
              type="closeempty" :color="color" size="16" @click="close" /> -->
    </view>
  </view>
</template>

<script>
// #ifdef APP-NVUE
const dom = weex.requireModule('dom');
const animation = weex.requireModule('animation');
// #endif

/**
 * NoticeBar 自定义导航栏
 * @description 通告栏组件
 * @tutorial https://ext.dcloud.net.cn/plugin?id=30
 * @property {Number} speed 文字滚动的速度，默认100px/秒
 * @property {String} text 显示文字
 * @property {String} backgroundColor 背景颜色
 * @property {String} color 文字颜色
 * @property {String} moreColor 查看更多文字的颜色
 * @property {String} moreText 设置“查看更多”的文本
 * @property {Boolean} single = [true|false] 是否单行
 * @property {Boolean} scrollable = [true|false] 是否滚动，为true时，NoticeBar为单行
 * @property {Boolean} showIcon = [true|false] 是否显示左侧喇叭图标
 * @property {Boolean} showClose = [true|false] 是否显示左侧关闭按钮
 * @property {Boolean} showGetMore = [true|false] 是否显示右侧查看更多图标，为true时，NoticeBar为单行
 * @event {Function} click 点击 NoticeBar 触发事件
 * @event {Function} close 关闭 NoticeBar 触发事件
 * @event {Function} getmore 点击”查看更多“时触发事件
 */

export default {
  name: 'UniNoticeBar',
  emits: ['click', 'getmore', 'close'],
  props: {
    prConfig: {
      type: Number,
      default: 0
    },
    text: {
      type: String,
      default: ''
    },
    moreText: {
      type: String,
      default: ''
    },
    backgroundColor: {
      type: String,
      default: '#FFF9EA'
    },
    speed: {
      // 默认1s滚动100px
      type: Number,
      default: 100
    },
    color: {
      type: String,
      default: '#FF9A43'
    },
    moreColor: {
      type: String,
      default: '#FF9A43'
    },
    single: {
      // 是否单行
      type: [Boolean, String],
      default: false
    },
    scrollable: {
      // 是否滚动，添加后控制单行效果取消
      type: [Boolean, String],
      default: false
    },
    showIcon: {
      // 是否显示左侧icon
      type: [Boolean, String],
      default: false
    },
    showGetMore: {
      // 是否显示右侧查看更多
      type: [Boolean, String],
      default: false
    },
    showClose: {
      // 是否显示左侧关闭按钮
      type: [Boolean, String],
      default: false
    }
  },
  data() {
    const elId = `Uni_${Math.ceil(Math.random() * 10e5).toString(36)}`
    const elIdBox = `Uni_${Math.ceil(Math.random() * 10e5).toString(36)}`
    return {
      textWidth: 0,
      boxWidth: 0,
      wrapWidth: '',
      webviewHide: false,
      // #ifdef APP-NVUE
      stopAnimation: false,
      // #endif
      elId: elId,
      elIdBox: elIdBox,
      show: true,
      animationDuration: 'none',
      animationPlayState: 'paused',
      animationDelay: '0s'
    }
  },
  mounted() {
    // #ifdef APP-PLUS
    var pages = getCurrentPages();
    var page = pages[pages.length - 1];
    var currentWebview = page.$getAppWebview();
    currentWebview.addEventListener('hide', () => {
      this.webviewHide = true
    })
    currentWebview.addEventListener('show', () => {
      this.webviewHide = false
    })
    // #endif
    this.$nextTick(() => {
      this.initSize()
    })
  },
  // #ifdef APP-NVUE
  beforeDestroy() {
    this.stopAnimation = true
  },
  // #endif
  methods: {
    initSize() {
      if (this.scrollable) {
        // #ifndef APP-NVUE
        let query = [],
            boxWidth = 0,
            textWidth = 0;
        let textQuery = new Promise((resolve, reject) => {
          uni.createSelectorQuery()
              // #ifndef MP-ALIPAY
              .in(this)
              // #endif
              .select(`#${this.elId}`)
              .boundingClientRect()
              .exec(ret => {
                this.textWidth = ret[0].width
                resolve()
              })
        })
        let boxQuery = new Promise((resolve, reject) => {
          uni.createSelectorQuery()
              // #ifndef MP-ALIPAY
              .in(this)
              // #endif
              .select(`#${this.elIdBox}`)
              .boundingClientRect()
              .exec(ret => {
                this.boxWidth = ret[0].width
                resolve()
              })
        })
        query.push(textQuery)
        query.push(boxQuery)
        Promise.all(query).then(() => {
          this.animationDuration = `${this.textWidth / this.speed}s`
          this.animationDelay = `-${this.boxWidth / this.speed}s`
          setTimeout(() => {
            this.animationPlayState = 'running'
          }, 1000)
        })
        // #endif
        // #ifdef APP-NVUE
        dom.getComponentRect(this.$refs['animationEle'], (res) => {
          let winWidth = uni.getSystemInfoSync().windowWidth
          this.textWidth = res.size.width
          animation.transition(this.$refs['animationEle'], {
            styles: {
              transform: `translateX(-${winWidth}px)`
            },
            duration: 0,
            timingFunction: 'linear',
            delay: 0
          }, () => {
            if (!this.stopAnimation) {
              animation.transition(this.$refs['animationEle'], {
                styles: {
                  transform: `translateX(-${this.textWidth}px)`
                },
                timingFunction: 'linear',
                duration: (this.textWidth - winWidth) / this.speed * 1000,
                delay: 1000
              }, () => {
                if (!this.stopAnimation) {
                  this.loopAnimation()
                }
              });
            }
          });
        })
        // #endif
      }
      // #ifdef APP-NVUE
      if (!this.scrollable && (this.single || this.moreText)) {
        dom.getComponentRect(this.$refs['textBox'], (res) => {
          this.wrapWidth = res.size.width
        })
      }
      // #endif
    },
    loopAnimation() {
      // #ifdef APP-NVUE
      animation.transition(this.$refs['animationEle'], {
        styles: {
          transform: `translateX(0px)`
        },
        duration: 0
      }, () => {
        if (!this.stopAnimation) {
          animation.transition(this.$refs['animationEle'], {
            styles: {
              transform: `translateX(-${this.textWidth}px)`
            },
            duration: this.textWidth / this.speed * 1000,
            timingFunction: 'linear',
            delay: 0
          }, () => {
            if (!this.stopAnimation) {
              this.loopAnimation()
            }
          });
        }
      });
      // #endif
    },
    clickMore() {
      this.$emit('getmore')
    },
    close() {
      this.show = false;
      this.$emit('close')
    },
    onClick() {
      this.$emit('click')
    }
  }
}
</script>

<style lang="scss" scoped>
.uni-noticebar {
  /* #ifndef APP-NVUE */
  display: flex;
  width: 100%;
  box-sizing: border-box;
  /* #endif */
  flex-direction: row;
  align-items: center;
  width: 460rpx;
}

.uni-cursor-point {
  /* #ifdef H5 */
  cursor: pointer;
  /* #endif */
}

.uni-noticebar-close {
  margin-left: 8px;
  margin-right: 5px;
}

.uni-noticebar-icon {
  margin-right: 5px;
}

.uni-noticebar__content-wrapper {
  flex: 1;
  flex-direction: column;
  overflow: hidden;
}

.uni-noticebar__content-wrapper--single {
  /* #ifndef APP-NVUE */
  line-height: 18px;
  /* #endif */
}

.uni-noticebar__content-wrapper--single,
.uni-noticebar__content-wrapper--scrollable {
  flex-direction: row;
}

/* #ifndef APP-NVUE */
.uni-noticebar__content-wrapper--scrollable {
  position: relative;
  height: 18px;
}

/* #endif */

.uni-noticebar__content--scrollable {
  /* #ifdef APP-NVUE */
  flex: 0;
  /* #endif */
  /* #ifndef APP-NVUE */
  flex: 1;
  display: block;
  overflow: hidden;
  /* #endif */
}

.uni-noticebar__content--single {
  /* #ifndef APP-NVUE */
  display: flex;
  flex: none;
  width: 100%;
  justify-content: center;
  /* #endif */
}

.uni-noticebar__content-text {
  font-size: 14px;
  line-height: 18px;
  /* #ifndef APP-NVUE */
  word-break: break-all;
  /* #endif */
}

.uni-noticebar__content-text--single {
  /* #ifdef APP-NVUE */
  lines: 1;
  /* #endif */
  /* #ifndef APP-NVUE */
  display: block;
  width: 100%;
  white-space: nowrap;
  /* #endif */
  overflow: hidden;
  text-overflow: ellipsis;
}

.uni-noticebar__content-text--scrollable {
  /* #ifdef APP-NVUE */
  lines: 1;
  padding-left: 750rpx;
  /* #endif */
  /* #ifndef APP-NVUE */
  position: absolute;
  display: block;
  height: 18px;
  line-height: 18px;
  white-space: nowrap;
  padding-left: 100%;
  animation: notice 10s 0s linear infinite both;
  animation-play-state: paused;
  /* #endif */
}

.uni-noticebar__more {
  /* #ifndef APP-NVUE */
  display: inline-flex;
  /* #endif */
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  padding-left: 5px;
}

.uni-noticebar__more-text {
  font-size: 14px;
}

@keyframes notice {
  100% {
    transform: translate3d(-100%, 0, 0);
  }
}
</style>